11721307 has 8 divisors (see below), whose sum is σ = 13058640. Its totient is φ = 10446240.

The previous prime is 11721293. The next prime is 11721323. The reversal of 11721307 is 70312711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11721307 - 2¹⁵ = 11688539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11721397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15169 + ... + 15922.

It is an arithmetic number, because the mean of its divisors is an integer number (1632330).

Almost surely, 2^11721307 is an apocalyptic number.

11721307 is a deficient number, since it is larger than the sum of its proper divisors (1337333).

11721307 is a wasteful number, since it uses less digits than its factorization.

11721307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31133.

The product of its (nonzero) digits is 294, while the sum is 22.

The square root of 11721307 is about 3423.6394377913. The cubic root of 11721307 is about 227.1565933554.

The spelling of 11721307 in words is "eleven million, seven hundred twenty-one thousand, three hundred seven".